The unit can be adjusted from quad-element sensing to twin-element sensing, which results in double the number of sensitive zones for situations where close-range detection is desirable. (Highest sensitivity setting)

The unit conducts a checking test of alarm contact whenever an alarm is initiated. An alarm LED flashes if the contact is short or damaged by induced lightning, etc.

Built-in alarm memory LED informs you which sensor triggered an alarm during an armed condition when two or more sensors are connected on the same line.

Trouble is indicated by continuous alarm output and continuous lighting of the alarm LED.